Malicious PDF — malware analysis report

Static analysis result for SHA-256 47da9c6e88e3ed3d…

MALICIOUS

PDF

114.2 KB Created: 2021-06-11 08:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f16b3674c9734ecb75340f4095e981de SHA-1: a3f5b8dc1fc1f459275c9cde956feb418e1152c6 SHA-256: 47da9c6e88e3ed3d4929d999eedebe353b267e8b03c13bb61a1d1a0437bdc051
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_INVOICE_LURE' indicates a fake invoice or payment lure, and the ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded URLs and the lure indicate this file is likely part of a phishing campaign to trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://synerhu.ru/uplcv?utm_term=accountant+resume+sample+pdf+in+india PDF link annotation
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/2hf8ievsak2119ngpmovrarg40/xoxokob.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093cf88767e3---murafuvagu.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160720e72d9d1b---soxemagetokamagogunelebe.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160826d1768a0e---75382726493.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/c6217cf480cb18d739cfe886288cea0e/retepimugelovegosixizib.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16093ce6c939ab---83816458032.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160854caee6323---rotowamejozipilosilupol.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/bajolug.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094610deb5e0---wuxuzi.pdfIn PDF document text
    • http://russkiivopros.com/images/FCKeditor/file/45861623039.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf51e333b9---kesimenoxosojug.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/kutifi.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/tsjjlkis8pfq0q17rdt60cc4s8/16709238536.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/9e7a8f335f35c39425289b7f0dc64812/16363504637.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/abe48vr5tb0fila9upve24o6a5/zugileviwes.pdfIn PDF document text
    • https://lacecinella.com/writable/public/userfiles/file/wiridire.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/e0bad1506fd9afee978e8ccfd543c8f5/79309919150.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17887 1528 bytes
SHA-256: ed92cafd901dd1cf1e35098023afc6358b03ff7238836c92b52e0ef4a2243c99
font_01_sfnt_off0001804f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1804F 5288 bytes
SHA-256: d6f8b9f355c05b7796c34fbe75194853f4df465bb197893c9b5b0352ca246580
font_02_sfnt_off00019235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19235 11984 bytes
SHA-256: 159d9e0a31fb872bc37fb637c18f4e301273d82dd80fa8b4e29b739df9f6e0de

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